1 files changed, 112 insertions, 0 deletions
diff --git a/Source/WTF/wtf/cocoa/WorkQueueCocoa.cpp b/Source/WTF/wtf/cocoa/WorkQueueCocoa.cpp
new file mode 100644
index 000000000..134961ec7
--- /dev/null
+++ b/Source/WTF/wtf/cocoa/WorkQueueCocoa.cpp
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "WorkQueue.h"
+
+namespace WTF {
+
+void WorkQueue::dispatch(std::function<void ()> function)
+{
+    ref();
+    dispatch_async(m_dispatchQueue, ^{
+        function();
+        deref();
+    });
+}
+
+void WorkQueue::dispatchAfter(std::chrono::nanoseconds duration, std::function<void ()> function)
+{
+    ref();
+    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration.count()), m_dispatchQueue, ^{
+        function();
+        deref();
+    });
+}
+
+#if HAVE(QOS_CLASSES)
+static dispatch_qos_class_t dispatchQOSClass(WorkQueue::QOS qos)
+{
+    switch (qos) {
+    case WorkQueue::QOS::UserInteractive:
+        return QOS_CLASS_USER_INTERACTIVE;
+    case WorkQueue::QOS::UserInitiated:
+        return QOS_CLASS_USER_INITIATED;
+    case WorkQueue::QOS::Default:
+        return QOS_CLASS_DEFAULT;
+    case WorkQueue::QOS::Utility:
+        return QOS_CLASS_UTILITY;
+    case WorkQueue::QOS::Background:
+        return QOS_CLASS_BACKGROUND;
+    }
+}
+#else
+static dispatch_queue_t targetQueueForQOSClass(WorkQueue::QOS qos)
+{
+    switch (qos) {
+    case WorkQueue::QOS::UserInteractive:
+    case WorkQueue::QOS::UserInitiated:
+        return dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
+    case WorkQueue::QOS::Utility:
+        return dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0);
+    case WorkQueue::QOS::Background:
+        return dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0);
+    case WorkQueue::QOS::Default:
+        ASSERT_NOT_REACHED();
+        return nullptr;
+    }
+    ASSERT_NOT_REACHED();
+}
+#endif
+
+void WorkQueue::platformInitialize(const char* name, Type type, QOS qos)
+{
+    dispatch_queue_attr_t attr = type == Type::Concurrent ? DISPATCH_QUEUE_CONCURRENT : DISPATCH_QUEUE_SERIAL;
+#if HAVE(QOS_CLASSES)
+    attr = dispatch_queue_attr_make_with_qos_class(attr, dispatchQOSClass(qos), 0);
+#else
+    UNUSED_PARAM(qos);
+#endif
+    m_dispatchQueue = dispatch_queue_create(name, attr);
+#if !HAVE(QOS_CLASSES)
+    if (qos != WorkQueue::QOS::Default)
+        dispatch_set_target_queue(m_dispatchQueue, targetQueueForQOSClass(qos));
+#endif
+    dispatch_set_context(m_dispatchQueue, this);
+}
+
+void WorkQueue::platformInvalidate()
+{
+    dispatch_release(m_dispatchQueue);
+}
+
+void WorkQueue::concurrentApply(size_t iterations, const std::function<void (size_t index)>& function)
+{
+    dispatch_apply(iterations, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(size_t index) {
+        function(index);
+    });
+}
+
+}